I think you hit the nail on the head-- he's finally developing the will to express himself. That, and probably a little separation anxiety. My daughter is going through this right now, and I just carry her a LOT. I do have a sling carrier that I used when she was tiny, and I've pulled it back out recently because it's easier than listening to her cry, especially in public! I don't know what to tell you, except that he will grow out of it. My son was the same way, and it lasted for quite a while, but once he learned to walk, it was mostly over, because he was able to find me in another room, and because he had more exciting things to do than be held. He still had some stranger anxiety for a while-- almost until age 2-- but once it was over, it was over. Now he is very independent and confident. I did, at times, just let him cry, because sometimes I just had things to do-- make dinner, take a shower, go to the dentist, whatever. But mostly I stayed close, so he knew I was there, and he eventually outgrew it. Don't feel guilty for letting him cry sometimes-- I recommend just turning on the radio, which covers some of the wailing and may distract him for a little while, as well. Good luck-- it doesn't last forever, it just feels like it! =)